Having turned down the opportunity to produce Frank Capra's It Happened One Night (1934), MGM's Louis B. Mayer had second thoughts when the Capra film swept the 1935 Oscars ceremony. Mayer hastily commissioned an It Happened One Night wannabe titled Love on the Run, tailored for the talents of Joan Crawford and Clark Gable (who, of course, had starred in the Capra picture, and had copped one of those Oscars). Gable and Franchot Tone play rival journalists Michael Anthony and Barnabas Pells, who travel the length and breadth of Europe to outscoop one another. Crawford portrays madcap heiress Sally Parker, who is engaged to marry fortune-hunting Prince Igor (Ivan Lebedeff). Whereas in It Happened One Night the heroine (Claudette Colbert) linked up with Gable in order to expedite her elopement with the wrong man, in Love on the Run Crawford seeks out Gable's help to escape her impending marriage with Prince Igor. The two stars combine their flight across Europe with business, dogging the trail of international aviator Baron Spandermann (Reginald Owen), whom Anthony suspects of being a spy. Pells goes along with Anthony and Parker, and soon all three of them are tied up (literally, in Pells' case) with an espionage ring. While it is Clark Gable who ends up with Joan Crawford at fadeout time, it was Franchot Tone who claimed her as his bride in real life.
by Hal Erickson synopsis